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# write(to:ofType:for:originalContentsURL:)

Saves changes in the document’s managed object context and saves the document’s persistent store to a given URL.

```
nonisolated func write(to absoluteURL: URL, ofType typeName: String, for saveOperation: NSDocument.SaveOperationType, originalContentsURL absoluteOriginalContentsURL: URL?) throws
```

## Parameters

`absoluteURL`

An URL that specifies the new location for the document store. It must not be a relative URL.

`typeName`

The document type.

`saveOperation`

The save operation type. See the “Constants” section in [`NSDocument`](/documentation/AppKit/NSDocument) for possible values.

`absoluteOriginalContentsURL`

An URL that specifies the location of the original document store.

## Discussion

> Handling Errors in Swift:
> In Swift, this method returns `Void` and is marked with the `throws` keyword to indicate that it throws an error in cases of failure.
> 
> You call this method in a `try` expression and handle any errors in the `catch` clauses of a `do` statement, as described in [Error Handling](https://docs.swift.org/swift-book/LanguageGuide/ErrorHandling.html) in [The Swift Programming Language](https://docs.swift.org/swift-book/) and `About Imported Cocoa Error Parameters`.

## See Also

[`-  configurePersistentStoreCoordinatorForURL:ofType:modelConfiguration:storeOptions:error:`](/documentation/AppKit/NSPersistentDocument/configurePersistentStoreCoordinator(for:ofType:modelConfiguration:storeOptions:))

Configures the receiver’s persistent store coordinator with the appropriate stores for a given URL.


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